Process Aerobic carbon removal Nitrification Denitrification Anaerobic digestion Anammox Electron donor Electron acceptor Carbon source Microorganism type

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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### Biological Processes in Wastewater Treatment

The table below outlines key biological processes involved in wastewater treatment, focusing on the roles of different microorganisms, electron donors, electron acceptors, and carbon sources.

| Process                  | Electron Donor   | Electron Acceptor | Carbon Source | Microorganism Type |
|--------------------------|------------------|-------------------|---------------|---------------------|
| Aerobic carbon removal   |                  |                   |               |                     |
| Nitrification            |                  |                   |               |                     |
| Denitrification          |                  |                   |               |                     |
| Anaerobic digestion      |                  |                   |               |                     |
| Anammox                  |                  |                   |               |                     |

#### Explanation of Terms:
- **Electron Donor**: A substance that donates electrons during a chemical reaction to another species.
- **Electron Acceptor**: A chemical entity that accepts electrons transferred to it from another compound. 
- **Carbon Source**: An organic molecule that provides carbon for the synthesis of new cells.
- **Microorganism Type**: The classification or specific type of microorganisms responsible for the process.

#### Detailed Process Descriptions:
1. **Aerobic Carbon Removal**:
   - **Electron Donor**: Typically organic carbon compounds like sugars.
   - **Electron Acceptor**: Oxygen (O2).
   - **Carbon Source**: Organic matter present in wastewater.
   - **Microorganism Type**: Aerobic heterotrophs.

2. **Nitrification**:
   - **Electron Donor**: Ammonium (NH4+).
   - **Electron Acceptor**: Oxygen (O2).
   - **Carbon Source**: CO2 or bicarbonate (for autotrophs).
   - **Microorganism Type**: Nitrifying bacteria, often two-step involving species like Nitrosomonas and Nitrobacter.

3. **Denitrification**:
   - **Electron Donor**: Organic compounds (e.g., methanol) or inorganic compounds.
   - **Electron Acceptor**: Nitrate (NO3-) or nitrite (NO2-).
   - **Carbon Source**: Organic matter or added external carbon sources.
   - **Microorganism Type**: Denitrifying bacteria.

4. **Anaerobic Digestion**:
   - **Electron Donor**: Organic matter.
   - **Electron Acceptor**: Various compounds
Transcribed Image Text:### Biological Processes in Wastewater Treatment The table below outlines key biological processes involved in wastewater treatment, focusing on the roles of different microorganisms, electron donors, electron acceptors, and carbon sources. | Process | Electron Donor | Electron Acceptor | Carbon Source | Microorganism Type | |--------------------------|------------------|-------------------|---------------|---------------------| | Aerobic carbon removal | | | | | | Nitrification | | | | | | Denitrification | | | | | | Anaerobic digestion | | | | | | Anammox | | | | | #### Explanation of Terms: - **Electron Donor**: A substance that donates electrons during a chemical reaction to another species. - **Electron Acceptor**: A chemical entity that accepts electrons transferred to it from another compound. - **Carbon Source**: An organic molecule that provides carbon for the synthesis of new cells. - **Microorganism Type**: The classification or specific type of microorganisms responsible for the process. #### Detailed Process Descriptions: 1. **Aerobic Carbon Removal**: - **Electron Donor**: Typically organic carbon compounds like sugars. - **Electron Acceptor**: Oxygen (O2). - **Carbon Source**: Organic matter present in wastewater. - **Microorganism Type**: Aerobic heterotrophs. 2. **Nitrification**: - **Electron Donor**: Ammonium (NH4+). - **Electron Acceptor**: Oxygen (O2). - **Carbon Source**: CO2 or bicarbonate (for autotrophs). - **Microorganism Type**: Nitrifying bacteria, often two-step involving species like Nitrosomonas and Nitrobacter. 3. **Denitrification**: - **Electron Donor**: Organic compounds (e.g., methanol) or inorganic compounds. - **Electron Acceptor**: Nitrate (NO3-) or nitrite (NO2-). - **Carbon Source**: Organic matter or added external carbon sources. - **Microorganism Type**: Denitrifying bacteria. 4. **Anaerobic Digestion**: - **Electron Donor**: Organic matter. - **Electron Acceptor**: Various compounds
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